Magnetic resonance system and method
    1.
    发明授权
    Magnetic resonance system and method 失效
    磁共振系统及方法

    公开(公告)号:US07123015B2

    公开(公告)日:2006-10-17

    申请号:US10953924

    申请日:2004-09-29

    IPC分类号: G01V3/00

    CPC分类号: G01R33/283

    摘要: A magnetic resonance (MR) system and method for generating information about an object is provided. The MR system comprises at least one MR detector configured to sense a plurality of electromagnetic signals and a modulator coupled to the MR detector and configured to modulate optical signals with the electromagnetic signals to generate corresponding modulated optical signals. The MR system further comprises a resonant matching circuit configured for matching an impedance of the MR detector to an impedance of the modulator to achieve at least one of a voltage gain or a noise performance. An optical conduit coupled to the modulator is configured to transmit the modulated optical signals from within a shielded environment to outside the shielded environment. A signal detector coupled to the optical conduit is configured to convert the modulated optical signals to electrical signals.

    摘要翻译: 提供了一种用于产生关于物体的信息的磁共振(MR)系统和方法。 MR系统包括被配置为感测多个电磁信号的至少一个MR检测器和耦合到MR检测器的调制器,并配置成用电磁信号调制光信号以产生相应的调制光信号。 MR系统还包括谐振匹配电路,其被配置为将MR检测器的阻抗与调制器的阻抗相匹配,以实现电压增益或噪声性能中的至少一个。 耦合到调制器的光导管被配置为将调制的光信号从屏蔽环境内传输到屏蔽环境外部。 耦合到光导管的信号检测器被配置为将经调制的光信号转换成电信号。

    Remote monitoring system and method
    2.
    发明授权
    Remote monitoring system and method 有权
    远程监控系统及方法

    公开(公告)号:US07852082B2

    公开(公告)日:2010-12-14

    申请号:US12177484

    申请日:2008-07-22

    IPC分类号: G01V3/00

    CPC分类号: H04B10/0799

    摘要: A remote control system for a modulatable device is provided. The remote control system comprises a receiver system coupled to the modulatable device and configured to obtain an output characteristic of the modulatable device, the receiver system being located remotely with respect to the modulatable device. The system further comprises a command signal setting system coupled to the receiver system and configured to use the output characteristic to generate a drive command signal and a bias system coupled to the command signal setting system and configured to receive the drive command signal and set a bias point of the modulatable device based on the drive command signal. The bias system is located locally with respect to the modulatable device. The command signal setting system and the bias system are coupled via a first optical conduit.

    摘要翻译: 提供了一种用于可调整设备的遥控系统。 遥控系统包括耦合到可调制设备并被配置为获得可调制设备的输出特性的接收机系统,接收器系统相对于可调制设备远程定位。 该系统还包括命令信号设置系统,其耦合到接收机系统并且被配置为使用输出特性来产生驱动命令信号和耦合到命令信号设置系统的偏置系统,并且被配置为接收驱动命令信号并设置偏置 基于驱动命令信号的可调制装置的点。 偏置系统相对于可调节装置位于本地。 命令信号设定系统和偏置系统通过第一光导管耦合。

    System and method for optical sensor interrogation
    3.
    发明授权
    System and method for optical sensor interrogation 有权
    光传感器询问系统和方法

    公开(公告)号:US08379217B2

    公开(公告)日:2013-02-19

    申请号:US11277294

    申请日:2006-03-23

    IPC分类号: G01B9/02

    摘要: An optical sensor interrogation system comprises: a multi-frequency optical source configured to generate an optical interrogation signal, at least one optical sensor configured to filter light at a wavelength corresponding to a value of a sensed parameter and generate an optical sensor data signal, a photodetector configured to detect a reference signal and the optical sensor data signal and generate an electrical difference frequency signal corresponding to a wavelength difference between the reference signal and the optical sensor data signal, and an electrical frequency measurement module configured to measure the electrical difference frequency.

    摘要翻译: 光学传感器询问系统包括:多频光源,被配置为产生光询问信号;至少一个光传感器被配置为过滤对应于感测参数的值的波长的光,并产生光传感器数据信号, 光电检测器,被配置为检测参考信号和光学传感器数据信号,并产生对应于参考信号和光学传感器数据信号之间的波长差的电差频率信号,以及被配置为测量电差频率的电频率测量模块。

    REMOTE MONITORING SYSTEM AND METHOD
    4.
    发明申请
    REMOTE MONITORING SYSTEM AND METHOD 有权
    远程监控系统和方法

    公开(公告)号:US20080281185A1

    公开(公告)日:2008-11-13

    申请号:US12177484

    申请日:2008-07-22

    IPC分类号: A61B5/05

    CPC分类号: H04B10/0799

    摘要: A remote control system for a modulatable device is provided. The remote control system comprises a receiver system coupled to the modulatable device and configured to obtain an output characteristic of the modulatable device, the receiver system being located remotely with respect to the modulatable device. The system further comprises a command signal setting system coupled to the receiver system and configured to use the output characteristic to generate a drive command signal and a bias system coupled to the command signal setting system and configured to receive the drive command signal and set a bias point of the modulatable device based on the drive command signal. The bias system is located locally with respect to the modulatable device. The command signal setting system and the bias system are coupled via a first optical conduit.

    摘要翻译: 提供了一种用于可调整设备的遥控系统。 遥控系统包括耦合到可调制设备并被配置为获得可调制设备的输出特性的接收机系统,接收器系统相对于可调制设备远程定位。 该系统还包括命令信号设置系统,其耦合到接收机系统并且被配置为使用输出特性来产生驱动命令信号和耦合到命令信号设置系统的偏置系统,并且被配置为接收驱动命令信号并设置偏置 基于驱动命令信号的可调制装置的点。 偏置系统相对于可调节装置位于本地。 命令信号设定系统和偏置系统通过第一光导管耦合。

    Clearance measurement systems and methods of operation
    6.
    发明授权
    Clearance measurement systems and methods of operation 有权
    间隙测量系统和操作方法

    公开(公告)号:US07466143B2

    公开(公告)日:2008-12-16

    申请号:US11229251

    申请日:2005-09-16

    IPC分类号: G01R27/04

    CPC分类号: G01B7/14 F01D21/003 G01B15/00

    摘要: A method is provided and includes exciting a sensor with an incident signal and generating a reflected signal by reflecting the incident signal from the sensor. The incident signal and the reflected signal interfere to form a standing wave. The method also includes processing the signals to determine a sensed parameter based upon a frequency at which the standing wave exhibits a null.

    摘要翻译: 提供了一种方法,包括激励具有入射信号的传感器,并通过反射来自传感器的入射信号产生反射信号。 入射信号和反射信号干扰形成驻波。 该方法还包括处理信号以基于驻波呈现零点的频率来确定感测参数。

    Very low power high accuracy time and frequency circuits in GPS based
tracking units
    8.
    发明授权
    Very low power high accuracy time and frequency circuits in GPS based tracking units 失效
    基于GPS的跟踪单元具有极低功耗的高精度时间和频率电路

    公开(公告)号:US5864315A

    公开(公告)日:1999-01-26

    申请号:US833564

    申请日:1997-04-07

    IPC分类号: G01S1/00 G01S5/02 G01J5/00

    CPC分类号: G01S19/34 G01S19/235

    摘要: A direct sequence spread spectrum signal processing system permits the receiver to be turned off during most of the acquisition phase of reception to significantly reduce the on time of the associated receiver front end. Power requirements are further reduced by use of very low power high accuracy time and frequency circuits in GPS based tracking units. The microprocessor based GPS tracking system is shut down almost all the time, using extremely little electrical power, and is powered up for very short periods of time at scheduled intervals by an extremely low power clock circuit with accuracy that varies with temperature. Each time the microprocessor is powered up, system temperature is recorded in memory. At times when the microprocessor is powered up, the GPS system is accessed and the GPS standard time is read. The difference between the low power clock circuit based time and the GPS based time is correlated with the recorded temperature history. A correction table, built from this data, provides a temperature history based correction to the low power clock based circuit without reference to the GPS system, and provides a highly accurate time standard. An additional table constructed in the microprocessor temperature compensates the local frequency standard used for frequency synthesis in satellite communication channels. This table is constructed by measuring offset between the calculated and actual synthesized frequency required to lock onto the satellite transmitted reference (pilot tone), and correlating this measured offset with the system ambient temperature.

    摘要翻译: 直接序列扩频信号处理系统允许接收机在接收的大部分采集阶段期间被关闭,以显着减少相关接收机前端的接通时间。 通过在基于GPS的跟踪单元中使用非常低功率的高精度时间和频率电路来进一步降低功率需求。 基于微处理器的GPS跟踪系统几乎全部关闭,使用极少的电力,并且由精确度随温度变化的极低功率时钟电路以预定的间隔供电非常短的时间段。 每当微处理器通电时,系统温度都会记录在存储器中。 当微处理器上电时,GPS系统被访问并且读取GPS标准时间。 基于低功率时钟电路的时间和基于GPS的时间之间的差异与记录的温度历史相关。 根据该数据构建的校正表提供基于低功率时钟的电路的基于温度历史的校正,而不参考GPS系统,并且提供高度准确的时间标准。 在微处理器温度下构造的附加表补偿了用于卫星通信信道中频率合成的本地频率标准。 该表是通过测量锁定到卫星传输参考(导频音)所需的计算和实际合成频率之间的偏移量,并将该测量的偏移与系统环境温度相关联构成的。

    DC-free run length constrained line coding with channel gain
    9.
    发明授权
    DC-free run length constrained line coding with channel gain 有权
    无通道运行长度限制线路编码与通道增益

    公开(公告)号:US06754282B1

    公开(公告)日:2004-06-22

    申请号:US09460106

    申请日:1999-12-13

    IPC分类号: H04L2300

    摘要: A dc-free coding scheme that also provides channel gain employs a code that is based on an alphabet of two and comprises a list of N-dimensional vectors, where N is even, with a maximum run of two symbols. From this list, all vectors which begin or end in two identical symbols are eliminated. This avoids runs of longer than two consecutive symbols when vectors are concatenated. With this scheme, if the baseband transmission of a “+” is realized with positive voltage V and transmission of a “−” is realized with a negative voltage −V, then any concatenation of symbols is dc-free. Improved coding gain is realized by mapping modulated signals onto convolutional code trellises.

    摘要翻译: 还提供信道增益的无直流编码方案采用基于两个字母表的代码,并且包括N维向量​​的列表,其中N是偶数,具有两个符号的最大运行。 从该列表中,消除了以两个相同符号开始或结束的所有向量。 当矢量被连接时,这避免了长于两个连续符号的运行。 利用该方案,如果利用正电压V实现“+”的基带传输,并且利用负电压-V实现“ - ”的传输,则符号的任何级联将是无直流的。 通过将调制信号映射到卷积码格来实现改进的编码增益。

    METHOD AND SYSTEM FOR ACTIVATION OF AN OPTICAL ARTICLE
    10.
    发明申请
    METHOD AND SYSTEM FOR ACTIVATION OF AN OPTICAL ARTICLE 有权
    光学文章激活的方法和系统

    公开(公告)号:US20090316565A1

    公开(公告)日:2009-12-24

    申请号:US12119796

    申请日:2008-05-13

    IPC分类号: G11B3/70

    摘要: A method for activating an optical article includes providing an optical article, wherein at least one mark is disposed on the optical article, wherein the mark comprises an optical-state change material in an initial state, the initial state preventing the optical article from being read by a player; deriving an unlock code by cryptographic operations on an optical article operatively coupled with a POS equipment and a data input from a medium encrypted with a cryptographic algorithm; deriving a toggling signal from an unlock code, and applying the toggling signal to the at least one mark resulting in changing the optical-state change material to a final state, the final state allowing the optical article to be read by the player; wherein the toggling signal comprises a set of values corresponding to the respective states of each of a plurality of marks on the surface of the optical article, and wherein applying the toggling signal results in setting each of the marks to either one of an initial state or a final state, corresponding to the value for the mark in the toggling signal.

    摘要翻译: 一种激活光学制品的方法包括提供光学制品,其中至少一个标记设置在光学制品上,其中标记包括处于初始状态的光学状态变化材料,初始状态防止光学制品被读取 由玩家 通过与POS设备可操作地耦合的光学制品和从使用加密算法加密的介质输入的数据进行加密操作来获得解锁代码; 从解锁码导出切换信号,以及将所述切换信号应用于所述至少一个标记,导致所述光学状态变化材料改变到最终状态,所述光学制品被所述玩家读取的最终状态; 其中所述切换信号包括与所述光学制品的表面上的多个标记中的每一个的相应状态对应的值,并且其中施加所述切换信号导致将每个所述标记设置为初始状态或 最终状态,对应于切换信号中标记的值。